Product name: Main shaft bearings Series 718, 719, 70, 72
The bearing research institute of Luoyang produces the bearing of main shaft of various kinds of ultra precision machine tools, Its leading product B7000CY series angle is exposed to the ball bearing with its high rotational speed, Ultraprecision rising by high rigidity, low temperature, low noise,etc. superior performance become domestic the masses of travelling trader first-ed export America and Europe and Southeast Asia alreadying.
Boundary
dimensions
a=15 a=25 Bearing
Desig-
nations
Load ratings Limiting speeds Load ratings Limiting speeds
d D B rsmin r1smin Cr Cor Grease Cor Cr Cor Grease Cor
mm kN r/min kN r/min
1019 5 0.30 0.10
22 6 0.30 0.10
26 8 0.30 0.15
30 9 0.60 0.15 1.8 1.1
2.9 1.8
4.0 2.4
6.4 3.8 75000 120000
70000 110000
67000 100000
56000 85000 1.7 1.1
2.7 1.7
3.8 2.3
6.3 3.7 70000 110000
67000 100000
60000 90000
53000 80000 71800
71900
7000
7200
1221 5 0.30 0.10
24 6 0.30 0.10
28 8 0.30 0.15
32 10 0.60 0.15 2.0 1.4
3.2 2.2
5.0 3.0
7.2 4.5 70000 110000
63000 95000
60000 90000
53000 80000 1.9 1.3
3.1 2.1
4.8 2.8
6.9 4.3 63000 95000
56000 85000
56000 85000
48000 70000 71801
71901
7001
7201
1524 5 0.30 0.10
28 7 0.30 0.10
32 9 0.30 0.15
35 11 0.60 0.15 2.2 1.8
4.8 3.4
5.3 3.3
9.1 5.8 60000 90000
53000 80000
50000 75000
48000 70000 2.1 1.7
4.6 3.2
5.1 3.1
8.8 5.6 53000 80000
50000 75000
45000 67000
43000 63000 71802
71902
7002
7202
1726 5 0.30 0.10
30 7 0.30 0.10
35 10 0.30 0.15
40 12 0.60 0.30 2.3 1.9
4.8 3.4
6.7 4.9
11.3 7.4 60000 90000
53000 80000
45000 67000
40000 60000 2.1 1.7
4.6 3.2
6.4 4.7
10.9 7.1 53000 80000
50000 75000
40000 60000
38000 56000 71802
71902
7003
7203
2032 7 0.30 0.10
37 9 0.30 0.15
42 12 0.60 0.15
47 14 1.00 0.30 3.9 3.4
7.4 5.8
9.6 6.3
13.1 9.6 45000 67000
40000 60000
38000 56000
34000 50000 3.7 3.2
7.0 5.6
9.2 6.0
12.6 9